Erlangen 2026 – scientific programme
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T: Fachverband Teilchenphysik
T 19: Gravitational Waves I
T 19.4: Talk
Monday, March 16, 2026, 17:00–17:15, KS 00.005
Probing binary black hole merger populations in AGN disks through future IceCube-Gen2 and Einstein Telescope observations — •Tista Mukherjee1, Mainak Mukhopadhyay2, Foteini Oikonomou3, Andreas Haungs1, and Ralph Engel1 — 1Institute for Astroparticle Physics (IAP), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany — 2Astrophysics Theory Department, Theory Division, Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA — 3Institutt for fysikk, NTNU, Trondheim, Norway
The detection of astrophysical neutrinos and gravitational waves (GWs) has ushered in a new era of multi-messenger astroparticle physics. While coincident detections of GW and neutrinos alongside electromagnetic signals have already been achieved in separate instances, no common source of GW and neutrinos has yet been identified. To address the implications of non-detection, this work investigates the prospects for identifying binary black hole mergers embedded in AGN disks as common GW-neutrino sources with next-generation facilities, e.g., the Einstein Telescope and IceCube-Gen2. For sources located in the Northern Hemisphere, the detection significance is quantified for both individual mergers and their populations, to be seen by the Einstein Telescope. It is found that, even with improved sensitivity of next-generation detectors, catalogue searches have limited potential. In contrast, stacking offers a viable path to uncover a population of common GW-neutrino sources in the future.
Keywords: Multi-messenger searches; Neutrinos; Gravitational Waves; IceCube-Gen2; Einstein Telescope